WATCH out men - if you are more John Prescott than John Travolta on the dance floor, you might not be too successful in the love stakes either.

The majority of women in Cardiff reckon that a man's moves on the dance floor reveal his sexual prowess in the bedroom. Of 2,000 women asked in the Welsh capital, 81% said the way blokes dance is a dead giveaway about their performance between the sheets.

Sex expert Flic Everett analysed the responses and concluded dance floor duffers are unlikely to score highly in the passion stakes while magic movers will be able to perform more than a few tricks in bed.

The survey was commissioned by mobile phone company phones4u to coincide with their new advert Dancer, featuring a grown man dancing like a maniac on a dance machine.

This is the first in a series of five new Ashamed Of Your Mobile? ads and is supported by the website, www.ashamedofyourdancing.co.uk.

Everett warned, "Beware the bloke that does the side-to-side shuffle on the dance floor. Boring, unimaginative and uninspiring, he'll generate even less energy in bed.

"Ballroom dancers, too, score a big fat zero in the sex stakes. They demand perfection in their partner. Women feel intimidated." "Blokes with no rhythm also come in for some criticism. It's unlikely that they'll ever reach the peaks of passion at the same time as their partner.

"However, there is some hope for those without rhythm as they could have a lot of fun trying.

"Surprisingly, the biggest dance floor flop is reserved for the disco kings - the men who are funky, flashy and perfectly in-synch on the dance floor.

"The perfect passion machine will be relaxed and rhythmic on the dance floor, not given to flashy `night fever' style displays but cool and imaginative."